The Missouri House of Representatives is comprised of 163 separate districts. Effective in 2001, all of the districts were restructured to reflect the findings from the 2000 U.S. Census.
The 123rd House District lies in the northwestern corner of Cass County, Missouri, and is generally located just south of the metro Kansas City area. The 123th District contains a small portion of southern Kansas City as well as the cities of Belton and Raymore.
| Belton | Demographic Report | Location Map |
| Raymore | Demographic Report | Location Map |
| Kansas City | Demographic Report | Location Map |